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3 years ago

Discuss the difference between |-12| and -12

Mathematics

2 answers:

Reil [10]3 years ago

4 0

Answer:

The sign inside the absolute value would change it from negative to positive.

Step-by-step explanation:

ruslelena [56]3 years ago

4 0

Answer:

See below.

Step-by-step explanation:

-12 is simply the number -12. It is a negative number. It is located 12 units to the left of zero on the number line (where right of zero is positive, and left of zero is negative).

|-12| is "absolute value of -12"

The absolute value of a number is the distance the number is from zero on the number line. A distance can be zero or a positive number, but never a negative number. The distance from the number -12 to 0 on the number line is 12 units. The absolute value of -12 is 12. The absolute value of a number is non-negative. That means it can be zero or positive, but it cannot be negative.

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Y= x - 4 5x+y=-34 How would I do this in steps ?

Lostsunrise [7]

Answer:

x = -5 y = -9

Step-by-step explanation:

y = x -4

5x + y = - 34

substitute x-4 in for y to solve for x

5x + x - 4 = 34

solve for x . . . add 5x + x = 6x

so you now have 6x-4 = -34

add 4 to both sides of the equation

6x-4 + 4 = -34+ 4

6x = -30

divide both sides by 6

6x/6 = -30/6

x= -5

then you plug -5 for x in the first equation

y = x - 4

y= -5 -4

y =-9

x= -5 y= -9

8 0

3 years ago

A fisherman travels downstream at full speed to his favorite fishing spot. The stream is running at a rate of 5 miles per hour,

gizmo_the_mogwai [7]

A fisherman travels downstream at full speed to his favorite fishing spot.
The stream is running at a rate of 5 miles per hour, and he takes an hour to get to the fishing hole. 
He catches 5 fish and calls it a day. 
He takes twice as long at full speed to get back to the dock going against the current. 
(x + 5)/(x - 5) = 2 
x = 15
The full speed of the fishing boat is 15 miles per hour.

5 0

3 years ago

Please help. will grant brainliest !

Igoryamba

Answer:

Step-by-step explanation:

Substitute i = 1, 2, 3, 4, 5 into the expression and sum the terms

3(1) + 3(2) + 3(3) + 3(4) + 3(5)

= 3 + 6 + 9 + 12 + 15

= 45

7 0

4 years ago